用过去时和过去完成时填空.
1.We ______ (paint) the house before we ___ (move) in.
2.They ________ (buy) a map of that country before they __________ (go) there.
3.I ________ (turn off) all the lights before I _________ (go) to bed.
翻译：
我们关灯之后去睡觉了.